Knock, Knock Joke
Rate: 8,75. To vote, download our Knock Knock Jokes app for your Android device.
Knock, knock!
Who's there?
Boo.
Boo who?
Don't cry. It's only a knock-knock joke.
Who's there?
Boo.
Boo who?
Don't cry. It's only a knock-knock joke.
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